Combining two arrays to create a two dimensional array in ruby

Question

a = [1, 2, 3]
b = [4, 5, 6]

How would I combine the two arrays in a 2D array?:

[[1, 4], [2, 5], [3, 6]]

Kulbir Saini · Accepted Answer · 2012-08-17 18:33:26Z

32

a.zip(b)
=> [[1,4],[2,5],[3,6]]

answered Aug 17, 2012 at 18:33

Kulbir Saini

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1 Comment

Tx. Kulbir! Didn't know that existed.

Michael Kohl · Accepted Answer · 2012-08-17 18:50:30Z

10

While zip is obviously the most straightforward answer, this also works:

[a, b].transpose
=> [[1, 4], [2, 5], [3, 6]]

answered Aug 17, 2012 at 18:50

Michael Kohl

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